Arapahoe County is a county located in the U.S. state of Colorado. As of the 2020 census, its population was 655,070, making it the third-most populous county in Colorado. The county seat is Littleton, and the most populous city is Aurora. The county was named for the Arapaho Native American tribe, who once lived in the region.
AdSee land and lots for sale, connect with local experts and schedule the tour today. Realtor.com® puts the best tools in your hands. Find the perfect land, lots & more
Site visitors: Over 100K in the past month
Find Open Houses · View local noise levels · Search by commute time
AdExplore homes for sale in Colorado. Get personalized guidance and find a top-rated agent. Movoto by OJO showcases Colorado houses & condos for sale that match your needs.
Site visitors: Over 100K in the past month
Real Estate Made Easy · School Search · Top Property Search · Sell Your Home